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| Green Rosetail HM |
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| Rosetail OHM, 'MG |
The quest for the perfect halfmoon by selectively breeding for branching and straight caudal edges has given rise to a new development in the Betta splendens tailforms - the Rosetail.
The main characteristic of the rosetail is the excessive branching in all three unpaired fins, especially the excessive branching and the overlapping rays in the caudal, which produces a 'rose-like' appearance. The extreme form of Rosetail can produce the very unique 'Feathertail' betta. A breeder using Rosetail bettas in their halfmoon lines has to be particularly careful of excess - fish who cannot swim properly, or who carry the trait into the mutation that has been coined 'X-Factor Fish' - fish with poor scales, shorter ventrals and collapsing finnage.
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